1204260643 has 2 divisors, whose sum is σ = 1204260644. Its totient is φ = 1204260642.

The previous prime is 1204260593. The next prime is 1204260661. The reversal of 1204260643 is 3460624021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1204260643 - 2²¹ = 1202163491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1204260683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602130321 + 602130322.

It is an arithmetic number, because the mean of its divisors is an integer number (602130322).

Almost surely, 2^1204260643 is an apocalyptic number.

1204260643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204260643 is an equidigital number, since it uses as much as digits as its factorization.

1204260643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 1204260643 is about 34702.4587457431. The cubic root of 1204260643 is about 1063.9147527548.

Adding to 1204260643 its reverse (3460624021), we get a palindrome (4664884664).

The spelling of 1204260643 in words is "one billion, two hundred four million, two hundred sixty thousand, six hundred forty-three".